export interface CredentialSignResponse extends Credential {
    response: {
        clientDataJSON: Uint8Array;
        authenticatorData: Uint8Array;
        signature: Uint8Array;
    };
}
export declare function authenticatorSign(challenge: Uint8Array, credentialId?: Uint8Array | string): Promise<{
    signature: Uint8Array;
    recovered: [Uint8Array, Uint8Array];
    credential: CredentialSignResponse;
}>;
export declare function verify(signature: Uint8Array, publicKey: Uint8Array, authData: Uint8Array, clientDataJSON: Uint8Array): boolean;
export declare function randomBytes(n: number): Uint8Array;
export interface AttestationObject {
    fmt: string;
    attStmt: any;
    authData: Uint8Array;
}
export declare function decodeAttestationObject(attestationObject: Uint8Array | ArrayBuffer): AttestationObject;
/**
 * Extracts PublicKey from AuthenticatorData as received from hardware key.
 *
 * See box `CREDENTIAL PUBLIC KEY` in picture:
 * https://w3c.github.io/webauthn/images/fido-attestation-structures.svg
 * @param {Uint8Array|ArrayBuffer} authData Use getAuthenticatorData(response).
 */
export declare function decodeAuthenticatorData(authData: Uint8Array): {
    rpidHash: Uint8Array;
    flags: number;
    signCounter: number;
    aaguid: Uint8Array;
    credentialId: Uint8Array;
    publicKey: Uint8Array;
    cose: Map<number, any>;
};
/**
 * Normalize authenticatorData across browsers/runtimes.
 */
export declare function getAuthenticatorData(response: any): Uint8Array;
/**
 * Normalize ArrayBuffer|Uint8Array|node:Buffer => Uint8Array or throw
 */
export declare function assertU8(o: any): Uint8Array;
/**
 * Recovers both recovery bit 0|1 candidates from
 * an authenticator produced signature.
 * @param signature Authenticator generated signature
 * @param authenticatorData Authenticator Data
 * @param clientDataJSON Authenticator generated clientDataJSON - watch out for https://goo.gl/yabPex
 * @returns Recovered tuple of pk0 and pk1
 */
export declare function recoverPublicKeys(signature: Uint8Array, authenticatorData: Uint8Array, clientDataJSON: Uint8Array): [Uint8Array, Uint8Array];
export declare function decodePubFromDID(did: string): Uint8Array;
export declare function encodeDIDFromPub(publicKey: Uint8Array): string;